(See related pages)
After studying the chapter, the student should be able to . . .
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Discuss what is meant by an object's form and its importance in understanding visual perception. |
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Explain what is meant by a spatial scale and its relevance to image analysis. Distinguish between course and fine spatial scale information. |
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Explain the multichannel model suggested by Campbell and Robson and the importance of this theory to form perception. |
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Describe a grating and its relevance to visual perception. Identify and distinguish between the four primary characteristics of a grating and explain the attributes of each characteristic. |
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Explain both a transfer function and Fourier analysis including their relevance to the study of form perception. |
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Distinguish between a transfer function and a contrast sensitivity function (CSF) and explain why two different terms are employed for similar functions. |
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Describe contrast sensitivity in photopic, mesopic, and scotopic vision. |
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Compare and contrast variations in the CSF among species and explain why these variations may serve adaptive purposes. |
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Explain the differences among CSFs of different age groups throughout the human life span and discuss the problems that can occur at each age from normal development and from disease. |
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Explain how to find evidence for spatial frequency channels in human vision using adaptation phenomena, including threshold elevation and size aftereffect. Distinguish threshold effects from contrast normalization effects. Explain the purposes of contrast normalization. |
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Explain the role of texture in the detection and discrimination of forms. Include those aspects of texture thought to have the greatest influence on form perception. |
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Discuss the Gestalt movement, and explain how this turn-of-the-century school of thought is relevant to the discussion of spatial vision and form perception. Relate specific Gestalt principles to the process of vision. |